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Patented Aug. 23, I893. C. S. SHARP.

DISK HARROW.

Invader:

' Wi'inesses:

Patented Aug. 23, I898.

C. S. SHARP.

D IS K H A R, R 0W.

(Application filed Aug. 2, 1897.)

2 Sheets-Sheat 2.

(No Model.)

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lTED

CHARLES sgsunnr, or AUBURN, NEW ronn, ASSIGNOR TO THE D. M.

OSBORNE & COMPANY, or SAME PLACE.

DISK HARROW.

SPECIFICATION forming part of Letters Patent No. 609,469, dated August 23, 1898.

Application filed August 2, 1897.

To all whom it may concern:

Be it known that 1, CHARLES S. SHARP, of Auburn, Cayuga county, New York, have invented an Improvement in Disk Harrows or Cultivators, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to disk barrows or cultivators of that class wherein the disk gangs may be reversed and may be adjusted relatively to each other, so that one may occupy a position in advance of the other and in any position that they may be placed may be angled as desired, and will also be free at all times to rock'or tilt; and the invention is an improvement upon the disk harrow or cultivator in Letters Patent No. 589,797, dated September 7, 1897. In said Letters Patent the disk-gang support is pivoted to the main frame and devices connect said support with the disk-gang frame, which are operated by the end thrust 'of the gang to apply a downward pressure upon the gang at one end, and said pressure devices being thus connected the disk gang may be angled as desired and reversed. The pressure device shown in said Letters Patent consists, essentially, of a bar pivoted at a point between its ends to the diskgang support, one end of said bar being connected by a link with one end of the disk gang and the other end of said bar bearing upon a rest or abutment provided for it on a yoke or equivalent part which is connected with the disk gang and operated by the end thrust of the gang to thereby in turn move said bar on its pivot.

My present invention has for its objects to improve the constructionof the pressure device, which is operated by the end thrust of the disk gang to apply a downward pressure to one end of the gang,whereby the link which has been previously used to connect said bar with the disk gang may be omitted, and, furthermore, to lower the pivotal connection of the yoke or equivalent part connecting the disk gang with its support.

In carrying out this invention the pressure device or bar is pivoted at a point between its ends to the disk-gang support, and one end rests upon an abutment on the yoke or equiv- Serial No. 646,778. (No model.)

alent part connecting the disk gang with its support,and the other end bears a friction-roll which rests directly on the beam of the gangframe, and said yoke or equivalent par-t connecting the disk gang with its support is pivoted at its lower end to the central standard of the disk-gang frame at a'point near the disk-gang shaft.

Figure 1 shows in plan View a disk harrow or cultivator embodying this invention, the gangs beingarranged one in advance of. the other; Fig. 2, a rear elevation of the. disk harrow or cultivator shown in Fig.1; Fig. 3, a vertical sectional detail of the disk-gang support, the pressure device, and a portion of the yoke connecting the disk gang with its support; and Fig. 4, a side elevation of the parts, showing the yokeconnected to the central standard of the disk-gang frame at a point near the gang-shaft.

The main frame or cross-bar A, having end blocks B, is connected with the diskgang frame of the harrow, and said main frame is herein shown as adapted to support two gangs of disks E. The disk-gang frame comprises, as herein shown, three upright standards B and a channel-iron beam A, fastened to the upper ends of said standards.

A yoke D formed with a bifurcated end to straddle the central upright B and beam A thereon, ispivoted at its lower end to the lower part of the standard B at a point near the gang-shaft. The yoke D. has formed on it a rest or abutment b The upper end of the yoke D is pivotally connected to one arm of the disk-gang support D, which is pivoted to one end of the main frame A, said support turning freely in the endblock of said main frame as if swiveled therein.

A bar D is pivoted at d to the disk-gang support D, and the inner end of said bar D bears upon the rest or abutment 5 formed on the yoke D", and the outer-end ofsaid bar bears upon the beam A, near one end thereof. The outer end of the bar D is formed or provided with downwardly-extended por tions, which are located a short distance apart (see Figs. 2 and 3) and which bestride the beam A.

Both ends of the pivoted-bar D may and preferably will bear friction-rollers.

The pivoted bar D is provided at points substantially midway between its ends with a series of holes to receive a pivot-pin, and said pin may be placed in any one of said holes for the purpose of adjusting the leverage which said bar is adapted to exert.

As the disk gang is thrust endwise the yoke D will be moved on its pivot and the pivoted bar D will in turn be moved on its pivot to cause its outer end to eXert a downward pressure upon the inner end of the disk gang.

It will be seen that by connecting to the disk-gang support the rocking or pivoted bar D, by means of which the end thrust of the machine is used to apply a downward pressure to the inner end of the disk gang, said bar may be removed with said support, to which it is attached-that is to say, the disk gang and its connected parts may be removed and reversed in assembled condition.

By lowering the pivotal connection of the yoke D it is made possible to arrange the bar D so that its outer end may directly en gage the beam of the gang-frame, and, furthermore, it will be seen that the pressure device thus constructed may be readily removed with the other parts when it is desired to reverse the gangs.

I claim 1. In a disk harrow or cultivator, the disk gang, the gang-frame comprising uprights B and beam A, the support, a yoke bestriding said gang-frame pivoted at its upper end to said support and pivoted at its lower end to the frame, said yoke having a rest or abut ment, a pressure device consisting of the bar D pivoted at apoint between its ends to said support, one end of which bears upon said rest or abutment, and the other end bears upon said beam A, substantially as described.

2. In a disk harrow or cultivator, the disk gang, the gang-frame comprising uprights B and beam A, the support, a pivoted yoke connecting said gang to said support, said yoke having a rest or abutment, a pressure device consisting of the bar D pivoted at a point between its ends to said support, one end of said bar bearing upon said rest or abutment and its opposite end bearing upon said beam A and having downwardly-extended portions located a short distance apart which bestride said beam, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

. CHARLES S. SHARP.

Witnesses:

FREDERICK M. Evnnrr'r, FRANK S. J ACQUES. 

